TDE core libraries
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/*
Copyright (C) 2001, 2002 Matthias Kretz
kretz@kde.org
2003 Arnold Krille
arnold@arnoldarts.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "kaudiorecordstream.h"
#include "kaudiorecordstream_p.h"
#include "kartsserver.h"
#include <artsflow.h>
#include <soundserver.h>
#include <tdeglobal.h>
#include <kdebug.h>
#include <tqstring.h>
#include <tqptrqueue.h>
#include <tqcstring.h> //QByteArray
#include <assert.h>
struct KAudioRecordStream::Data
{
Arts::Synth_AMAN_RECORD in;
Arts::AudioToByteStream convert;
Arts::StereoEffectStack effectStack;
Arts::ByteSoundReceiver receiver;
KByteSoundReceiver * receiver_base;
KArtsServer * kserver;
bool attached;
bool blocking;
bool polling;
unsigned int pos;
TQPtrQueue<TQByteArray> inqueue;
TQString title;
};
KAudioRecordStream::KAudioRecordStream( KArtsServer * kserver, const TQString & title, TQObject * parent, const char * name )
: TQObject( parent, name )
, d( new Data )
{
d->kserver = kserver;
d->attached = false;
d->blocking = true;
d->polling = false;
d->pos = 0;
d->inqueue.setAutoDelete( true );
d->title = title;
connect( d->kserver, TQT_SIGNAL( restartedServer() ), TQT_SLOT( slotRestartedServer() ) );
d->in = Arts::DynamicCast( d->kserver->server().createObject( "Arts::Synth_AMAN_RECORD" ) );
d->effectStack = Arts::DynamicCast( d->kserver->server().createObject( "Arts::StereoEffectStack" ) );
d->convert = Arts::DynamicCast( d->kserver->server().createObject( "Arts::AudioToByteStream" ) );
if( d->in.isNull() )
kdFatal( 400 ) << "couldn't create a Synth_AMAN_RECORD on the aRts server\n";
if( d->effectStack.isNull() )
kdFatal( 400 ) << "couldn't create a StereoEffectStack on the aRts server\n";
if( d->convert.isNull() )
kdFatal( 400 ) << "couldn't create a AudioToByteStream on the aRts server\n";
d->in.title( ( const char * ) d->title.local8Bit() );
Arts::connect( d->in, d->effectStack );
d->in.start();
d->effectStack.start();
}
KAudioRecordStream::~KAudioRecordStream()
{
d->receiver = Arts::ByteSoundReceiver::null();
// don't delete receiver_base because aRts takes care of that (in the line
// above)
d->receiver_base = 0;
delete d;
}
int KAudioRecordStream::read( char * buffer, int size )
{
kdDebug( 400 ) << k_funcinfo << endl;
unsigned int remaining = size;
while( remaining )
{
if( d->blocking )
while( d->inqueue.isEmpty() )
Arts::Dispatcher::the()->ioManager()->processOneEvent( true );
else
{
if( d->inqueue.isEmpty() )
Arts::Dispatcher::the()->ioManager()->processOneEvent( false );
if( d->inqueue.isEmpty() )
return size - remaining;
}
TQByteArray * data = d->inqueue.head();
unsigned int tocopy = kMin( remaining, data->size() - d->pos );
memcpy( buffer, data->data() + d->pos, tocopy );
d->pos += tocopy;
buffer += tocopy;
remaining -= tocopy;
if( d->pos == data->size() )
{
d->inqueue.remove();
d->pos = 0;
}
}
return size;
}
void KAudioRecordStream::setBlockingIO( bool blocking )
{
d->blocking = blocking;
}
bool KAudioRecordStream::blockingIO() const
{
return d->blocking;
}
void KAudioRecordStream::usePolling( bool polling )
{
d->polling = polling;
if( ! polling )
flush();
}
bool KAudioRecordStream::polling() const
{
return d->polling;
}
Arts::StereoEffectStack KAudioRecordStream::effectStack() const
{
return d->effectStack;
}
bool KAudioRecordStream::running() const
{
return d->attached;
}
void KAudioRecordStream::stop()
{
kdDebug( 400 ) << k_funcinfo << endl;
if( d->attached )
{
d->receiver.stop();
d->convert.stop();
Arts::disconnect( d->convert, d->receiver );
d->receiver = Arts::ByteSoundReceiver::null();
d->receiver_base = 0;
Arts::disconnect( d->effectStack, d->convert );
d->attached = false;
emit running( false );
}
}
void KAudioRecordStream::start( int samplingRate, int bits, int channels )
{
kdDebug( 400 ) << k_funcinfo << "samplingRate: " << samplingRate << " bits: " << bits << " channels: " << channels << endl;
if( ! d->attached )
{
assert( d->kserver );
if( ( samplingRate < 500 || samplingRate > 2000000 )
|| ( channels != 1 && channels != 2 ) || ( bits != 8 && bits != 16 ) )
{
kdWarning( 400 ) << "invalid stream parameters: rate=" << samplingRate << ", " << bits << " bit, " << channels << " channels\n";
}
else
{
d->convert.samplingRate( samplingRate );
d->convert.channels( channels );
d->convert.bits( bits );
Arts::connect( d->effectStack, d->convert );
d->receiver_base = new KByteSoundReceiver( samplingRate, bits, channels, d->title.local8Bit() );
d->receiver = Arts::ByteSoundReceiver::_from_base( d->receiver_base );
connect( d->receiver_base, TQT_SIGNAL( data( const char *, unsigned int ) ),
TQT_SLOT( slotData( const char *, unsigned int ) ) );
Arts::connect( d->convert, "outdata", d->receiver, "indata" );
d->convert.start();
d->receiver.start();
//### needed?
Arts::Dispatcher::the()->ioManager()->processOneEvent( false );
d->attached = true;
emit running( true );
}
}
}
void KAudioRecordStream::flush()
{
kdDebug( 400 ) << k_funcinfo << endl;
d->inqueue.clear();
}
void KAudioRecordStream::slotRestartedServer() { }
void KAudioRecordStream::slotData( const char * contents, unsigned int size )
{
//kdDebug( 400 ) << k_funcinfo << endl;
TQByteArray * bytearray = new TQByteArray( size );
// copy the contents to the bytearray
// this has to be deleted later
bytearray->duplicate( contents, size );
if( d->polling )
{
kdDebug( 400 ) << "enqueue the data\n";
d->inqueue.enqueue( bytearray );
}
else
{
//kdDebug( 400 ) << "emit the data\n";
emit data( *bytearray );
//kdDebug( 400 ) << "delete the data\n";
delete bytearray;
}
}
////////////////////////////////////////
// ---*--- KByteSoundReceiver ---*--- //
////////////////////////////////////////
KByteSoundReceiver::KByteSoundReceiver( int rate, int bits, int channels, const char * title )
: _samplingRate( rate )
, _bits( bits )
, _channels( channels )
, _title( title )
{
}
KByteSoundReceiver::~KByteSoundReceiver()
{
}
void KByteSoundReceiver::process_indata( Arts::DataPacket<Arts::mcopbyte> * inpacket )
{
//kdDebug( 400 ) << k_funcinfo << " size of the packet: " << inpacket->size << endl;
emit data( (char *)inpacket->contents, inpacket->size );
inpacket->processed();
}
// vim:sw=4:ts=4
#include "kaudiorecordstream.moc"
#include "kaudiorecordstream_p.moc"